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Highly permselective MIL‐68(Al)/matrimid mixed matrix membranes for CO 2 /CH 4 separation
Author(s) -
Dong Xinyu,
Liu Qian,
Huang Aisheng
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43485
Subject(s) - barrer , membrane , selectivity , porosity , materials science , chemical engineering , polymer , matrix (chemical analysis) , gas separation , metal organic framework , polymer chemistry , chemistry , organic chemistry , composite material , catalysis , adsorption , biochemistry , engineering
With global appeal to green and efficient utilization of energies, metal‐organic frameworks based mixed matrix membranes are standing out in applications such as gas and liquid separation because of the integration of size/shape selectivity of MOFs with processability and mechanical stability of polymers. In the present work, a novel MIL‐68(Al) (MIL = Material of Institute Lavoisier) based mixed matrix membrane (MMM) was developed by adding porous MIL‐68(Al) into Matrimid for the separation of CO 2 /CH 4 mixture. The MIL‐68(Al)/Matrimid MMM displays a high CO 2 permselectivity. For the separation of an equimolar CO 2 /CH 4 mixture at 373 K and 1 bar, the CO 2 permeability and the CO 2 /CH 4 selectivity are 284.3 Barrer and 79.0, respectively, which far exceed the Robeson upper bound limit and those of the previously reported MMMs. Both the operation pressure and temperature have great influence to the separation performance of the MIL‐68(Al)/Matrimid MMM. Further, the MIL‐68(Al)/Matrimid MMM shows a high stability in the long‐term separation of CO 2 /CH 4 . These properties recommend the MIL‐68(Al)/Matrimid MMM as a promising candidate for the purification of natural gases. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43485.